asus memopad hd7 slow wifi after update.

[William Gaatjes]

Recently i had a rather large system update. After that i noticed slow downs in my internet and streaming a movie was impossible. When checking my wifi connection it turns out it makes a wifi connection at 54Mbps. But as soon as i start browsing, it drops down to 12Mpbs and 1Mbps. After trying chrome to make sure it was not opera specific, i was totally annoyed by chrome. What a crap browser, it wants to connect to some google service, constantly asks to translate websites i do not want translated. But chrome aside, i found out that the way to solve the issue is to 'forget' the wifi connection and re-enter the password. After that, the wifi connection works fine again. Is this a common issue for tablets after a system update ?

 

[William Gaatjes]

Aargh, it is happening again. It updated some apps and now i have a 1Mbps connection even after forgetting the connection and re-entering the password. Asus is really crap. Everything i bought from them breaks down way to early or has some stupid flawas for example after an update. I will never buy anything from that crap brand anus again.

 

[William Gaatjes]

This is beginning to turn into a detective story.
It is working again, and yesterday in the morning it also worked. It works at 6:00 in the morning. But it does not work in the evening after around 20:00. Like it is tired or something...
I am beginning to suspect that there is something else the problem. I am going to install a wifi analyzer on my memopad to look at signal strength of my own router and of adjacent routers in the neighborhood. I am beginning to wonder if there is a neighbor with a very powerful wifi router that when turned on, disrupts the connection between my memopad and my router. I have to see if i can change channels. This is such a weird problem.

 

[William Gaatjes]

I changed the wifi channel from 11 to 2. To see if that will help. Now i have to wait for tonight and see if this will solve the problem i had the last few weeks.

 

[William Gaatjes]

Interesting, a wifi router previously not present in the morning is now present. And it has a lot of output power at exactly channel 11. Even more then my own wifi router according to wifi analyzer, the program i installed this morning at my memopad (while sitting 7 feet away from my wifi router). I am beginning to suspect that this is the real problem. Can it really be a coincidence that exactly when i got a system update, some neighbor bought a wifi router with a lot of output power ? I have been watching movies streaming from the internet every evening these days before, for weeks now. Maybe i am wrong about asus this time. I do hope so.

 

[William Gaatjes]

I got another wifi router at channel 8 with a -40dbm signal.
The wifi router at channel 11 is at the moment popping up and going away. There is also an open network. Better not connect to that one as it could be a honeypot trap. My wifi router filters also at the mac address. And when you connect to another open network, your macaddress is known. The start of intelligence gathering to connect to a network. Still can stream movies now.

Edit: that idea about wifi might not be the case. Ican see all routers and their mac adresses. Is it also possible to see the mac adresses of wifi devices ?

 

[s44]

https://play.google.com/store/apps/details?id=eu.chainfire.pryfi&hl=en

 

[William Gaatjes]

https://play.google.com/store/apps/details?id=eu.chainfire.pryfi&hl=en

Thank you. But i always turn on and off my wifi manually.
It saves power to turn it off when not needed.


Coming back to the issue i had, my router gives of -30dbm when standing next to it.
I suspect that occasionally a high power router of the neighbors overshadowed my own router on the same wifi channel.
Now that i have changed the channel i no longer suspect any trouble. I am going to keep track for a while to see what is going on is really what i am suspecting.

 

[William Gaatjes]

Soon after the last post i decided to change back to channel 11 again , to see if i can recreate the problem. It has not happened since but i did get a lot of updates for various programs standard installed on the memo pad. I am not sure if there was a system update part of it. I do have noticed that a high power wifi router at channel 8 is putting out more power than my router does. Perhaps that router was also on channel 11 in the past. I just changed my router back from channel 11 today to channel 2 and let it be. It works now flawlessly. If it starts again, the saga will continue.

 

[William Gaatjes]

The saga continues... Sadly... I just had another large update for google + and after that it is slow again. I checked if the wifi channel was occupied but that is not the case and even while sitting next to my router the problem is still here.
I am thinking about some background downloading that throttles the data for other programs using the internet. I just restarted the memopad and it sort of works. Speed is 11Mbps , horrible. It has been a rockstable 54Mbps for weeks in a row. Now i get all these updates and it starts again. Does anybody know how to turn off that dreaded autoupdate feature ? Has anybody a clue of why this is happening ? Is my view of asus being a crap brand being justified again ?

 

[William Gaatjes]

I noticed that there is a high power router and it is on channel 4(The one on channel 8 is no longer there and it could be the same one, i have to write down the ssid). I had my wifi channel set to channel 2. There are a lot of weak routers on channel 11. I turned my router wifi channel to channel 11 again. And now it seems to function again with 54Mbps. Is there something wrong with the wifi reception of the memopad ? Can a high power router on a neighboring wifi channel disrupt the communication on another channel ? Anybody have a clue ?

 

[William Gaatjes]

I do not know why, but the nearby powerful wifi router with the same ssid as i mentioned before is disrupting my communication while being on a different wifi channel. It is now on channel 8 again. And is disrtupting my wifi on channel 11. I changed my wifi channel to 1 and everything i stream on my memopad is nonstop with a speed of 54mbps.

 

[William Gaatjes]

I have been reading about how wifi works. And it really is wifi interference that is causing the problems with my memopad.

http://www.metageek.net/support/why-channels-1-6-and-11/

Spending money for high speed Internet and not getting what you expected? Are you and your colleagues not able to stay connected to the office network? Was your Wi-Fi network working fine in the past and then suddenly very slow Wi-Fi data rates?

Each case above indicates Wi-Fi interference.

There are three main causes of Wi-Fi interference: co-channel, overlapping channel and non-Wi-Fi wireless interference.

Channel related interference can be reduced or eliminated by selecting the proper Wi-Fi channel for your network. Ultimately improving your 2.4 GHz Wi-Fi network coverage and performance.

Let’s get technical for a moment. The 2.4 GHz Wi-Fi (802.11 b/g/n) spectrum is 100 MHz wide and made up of 11 channels centered 5 MHz apart. Each 2.4GHz channel is 20 – 22 MHz wide making the spectrum a little crowded.

If each channel is 20 MHz wide, this means there will be a minimum of 10 MHz of overlap with neighboring channels (overlapping channel interference). For example, if your network is on channel 9, it will overlap with channels 7, 8, 10, 11.

Creating a situation where your network is yelling loudly in a foreign language, distracting any network on an overlapping channel. Vis-versa for the other networks and your network.

In the case of Wi-Fi, channel overlapping is bad. This leaves only channels 1, 6 and 11 not overlapping with each other.


General rule of thumb, you want your network to be anti-social with other networks. So, avoid being within 2 channels of any other network.

If you cannot avoid them, join them. Sharing the same channel, co-channel interference, is not ideal, the impact of the interference is reduced because the 802.11 specification has methods to negotiate same channel communications.

The high power router of one of my neighbors is that is causing the interference is hopping between channel 4 and 8. I am changing my channel to 1 when the high power router is on channel 8 and i am changing my channel to 11 when the high power router is on channel 4. I think that the high power router uses more bandwidth then allowed.

http://en.wikipedia.org/wiki/List_of_WLAN_channels

 

[s44]

You could get a higher-power AP of your own and play wifi wars.

Or move to 5ghz (which I'm guessing this cheap tablet doesn't support).

 

[William Gaatjes]

I am testing to see what happens when i use the same channels 4 and 8.
According to the article , wifi protocol can handle such interference. As it turns out, 5mbps is what i get out of it. I have another router and i have set it up to use channels 4 and 8. And it has a 20MHz/40MHz bandwidth option. I turned that on too. For a few days i will keep it on and see what happens. If i get a better connection or not. Now i can switch between routers.